3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
COMMON
2
lu~WWW_^WX
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sXXWZ
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sXXW_ kup
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yXXW` [U^r
GND2
GND5
GND11
ANT
GND10
TRX5
TRX6
GND1
GND12
GND3
GND4
GND6
24
23
25
26
27
5
2
|XXWW
7
6
4
3
28
1
sXXW[ XUY
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tjTjWWWWYTX[GaGlzkGwGj
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yGXUW
sXZX_ kup
sXZYW YU[
sXZX] YU[
ANT RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
i_W^_msXZWZ
75
8
4 9
2
3
16
sXZ\X XU_
sXZYX kup
jXZX[ kup
sXZ\W XU_
sXZYZ kup
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kupsXZYY
sXZ[Z
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sXZX` \U]
ZnyiYw
ZnyiYu
YWX[GW[GWZGGsG
sXZX_GGGkw
X[WZY^jGGokr
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B2
yGXUW
yGXUW
jXZW_ X
jXZXX kup
kupjXZXZ
jXZXY kup
+3V4_MTK_VPA
}ih{
XjXZW`
Z]
yX]WZ
jXZY_ Z
yX]WX
Y^
{vsdWUWX
RFIN_LB
GND1
VEN_LB
RFOUT_HB
CPL_OUT
VBATT
VEN_HB
VCC
RFIN_HB
VMODE
NCCPL_IN
RFOUT_LB
GND2
PGND
zr^^^\_|XZWW
15
13
14
10 5
6
4
12
7
3
8
11
1
9
2
yX]WY
{vsdWUWX
Y^
jXZXW YUY
sXZ[W
kup
kupsXZZ`
ZZjXZY^
sXZZ_
kup
sXZZ^ kup
jXZW^ X
Zn{oiY
ZnwhiYlu
Zn{si
whtvklzlsW
Znwhsilu
wkl{pu
XWiGhU
CPL factor(LB) : 20.5 - 21.5dB
CPL factor(HB) : 19.5dB
X[WZYWjG}Gt{r
GGGGZnGwh
TP1
TP2
TP3
TP4